It's pretty simple, you write something about the person above you, yourself, then the person who will post below you set up like this:

^(something about the person above you)
<(something about you)
v(something about the next poster)

What you say can be as crazy, true, or funny as you want! Just don't be mean please :)

I'll go first

^does not exhist
<Is very tired and watching SNL
V Is a fan of Harry Potter